Nut-lock



-N6. 751, 57. PATENTED FEB. 9, 1904; H. J. GASANOVA 2 H. 0. CALDWELL.

NUT LOOK APPLICATION FILED FEB. 12, 1903. H0 MODEL.

' UNITED i Patented February 9, 1904.

PATENT OFFICE.

HENRY J. CASANOVA AND HARRY ORANMER CALDWELL, or "CHICAGO,

' ILLINOIS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 751,457, dated February 9, .1904.

I Application filed February 12, 1903. Serial No.143,046. (N0 model.)

To all whom, it may concern:

use of which the main or confining nut may be adjusted to position or removed'without' interference by the lock-bolt and the lockbolt thereafter adjusted, the lock-bolt and confining-nut being nevertheless permanently united to each other; to provide a construction in which the number of parts is reducedto a minimum and the several parts are of extremely simple and-practical construction; to provide a construction in which the confiningnut forms an end cap upon the spindle the only opening into which is closed by the lockbolt, and in general toprovide a simple and improved construction of the character referred to.

To the above ends the invention consists in 1 the matters hereinafter described, and moreparticularly pointed out in the appended claims.

The invention will be readily understood from the following description, reference being had to the accompanying drawings, in which Figure 1 is a view in side elevation of the spindle portion of an axle with the confiningnut and lock-bolt in, position thereto. Fig. 2 is an outerend elevation of the lock-bolt head. Fig. 3 is a-side elevation of the end of the spindle with the confining-nut removed. Fig. 4 is a longitudinal section of the confiningnut and lock-bolt assembled. Fig. 5 is a longitudinal sectional view of the end of the axlespindle.

Referring to the drawings, a designates the h the lock-bolt.

spindle is also provided with an axial bore 01 and a counterbore d, the portion (2 being internally threaded, while the counterbored portion at thereof is unthreaded and made of sufliciently larger diameter to avoid interfer: ence with the threads of The lock-bolt c comprises a threaded portion 0, adapted to fit and engage the internallythreaded bore 07- of the spindle, a reduced extension e, which extends through a corresponding axially-disposed aperture 6 in the confining-nut, and a rigid headupon the outer end of the reduced extension. The pitch of the threads (0 on the exterior of the spindle are the reverse of those, 0i which receive the lockbolt in order to secure the usual looking effect, and in order that the confining-nut may be adjusted fully to its holding position before the lock-bolt is brought into operation the unthreaded counterbore d is of suflicient length to accommodate practically the full the engaging part of length of the threaded portion 0 .of the locking-bolt. Accordingly the extension 6 of the lock-bolt is of suflicient length to permit the and the opposed surface of the confining-nut a washer f is interposed between said parts.

It will be understood from the foregoing.

that the adjustment of the confining-nut and lock-bolt to their respective positions is independent of each other-that is to say, the confining-nut is first turned down until it is properly seated against the wheel-hub, after which the lock-bolt is turned up until it seats against the end of the nut. Vice versa, in re moving the confining-nut the lock-bolt is first entirely withdrawn from its threaded en gagement with the spindle and the confiningnut thereafter removed by turningit in the opposite direction. The difiicult and awkward operation of turning the confining-nut and lock bolt in opposite directions at the same time is in this construction entirely obviated. By reason of the fact that the lock-bolt and confining-nut are permanently though movably united, said lock-bolt being swiveled or revolubly secured in the end of the confining-nut, these parts cannot become accidentally separated 'nor displaced relatively to each other, so that the operation of removing and replacing the confining-nut is but little more than as though it were unprovided with a locking device.

While we have herein shown what we deem to be the preferred embodiment of our invention, yet it will be understood that the details of construction may be modified without departing from the spirit of the invention. For example, by making the reduced extension 6 of the lock bolt longer the unthreaded counterbore d may be shortened or entirely dispensed with if the confining-nut be correspondingly lengthened, so as to provide space between the end wall of the latter and the end of the spindle when the confining-nut is seated. We do not, therefore, limit ourselves to the exact details of construction shown.

We claim as our invention- 1. In combination, a spindle or analogous device provided with an externally-threaded portion, a threaded axial bore and an unthreaded counterbore, a confining-nut fitting upon the threaded portion of the spindle, a lock-bolt arranged axially within the confin-. ing-nut and threaded to engage said axial bore of the spindle, an unthreaded reduced extension connected with the threaded portion of said bolt and extending through the end of the confining-nut, a head upon the outer end of said extension, the unthreaded portion of said lock-bolt and the portion of the confina threaded portion adapted to the bore of the spindle.

3. In combination, a spindle or the like provided with an externally-threaded portion, and an axial bore threaded throughout a part of its length and unthreaded and enlarged throughout a further part of its length, a confining-nut fitting the threaded portion of the spindle, and a lock-bolt having swiveling and endwise-sliding engagement with the confining-nut, the inner end of said lock-bolt adapted to the threaded portion of thebore and the outer end adapted to a rotating tool.

4. In combination, a spindle or the like provided with an externally threaded portion and an axial bore the inner end of which is threaded reversely to that of the external threads, and the outer portion of which bore is unthreaded and enlarged, a confining-nut fitting the threaded portion of the spindle and provided with an axial aperture in its end wall, a lock-bolt having a threaded portion within theconfining-nut adapted to engage the threaded bore of the spindle, a reduced extension extending through the aperture of the confining-nut and an external head, the length of the reduced extension being greater than the thickness of the wall of the cap-nut through which it extends, whereby the lockbolt has swiveling and endwise-sliding en gagement with the confining-nut, as and for the purposes set forth.

HENRY J. CASANOVA. H. CRANMER CALDWELL. Witnesses:

I. J. FRANKLIN, WILLIAM CHoNns. 

